Brake hose end



NOV. 29, 1949 l G, H, HUFFERD 2,489,890

BRAKE HOSE END Filed May 10, 1946 Il', f

\071111111111111111111111111111Il"n lill/fl, 011/1114 3/ Wyk-I 55 36 I /4 Aoneys Patented Nov. 29, 1949 UNITED vSTATES PATET OFFICE 2' Claims.

My invention relates to hose. couplings and has for its principal object the provision of improved,

easily manufactured, inexpensive, easily assembled hose ends, especially such as may be, employed for hose couplingsof hydraulic brakes for automotive vehicles.

Other and further objects, features and advantages ofthe invention will become apparent as the description proceeds.

In carrying lout my invention in accordance with a preferred form thereof, I provide a tubular vsleeve member having one end adapted to engage the outer surface of` a hose composed of resilient material such as rubber or synthetic compound and having a reduced diameter portion at the other end inwardly or outwardly threaded for coupling with other threaded t* tings. A shoulder or seat is formed at the reduced diameter portion of the tubular member against which the body insert preferably conical, is adapted to fit with sufficient precision to form a iiuid-tight joint. A standpipe is joined to or integral with the body insert and arranged to project within the hose engaging portion. of the tubular member to engageV the bore of a hose. The tubular member is deformed inwardly for the purpose of directly or indirectly securing the body insert within the tubular member. This may be done in such a manner as to form a shoulder adjacent the body insert directly securing the body insert within the tubular member or in such a manner asfto compress the hose against the standpipe so as to hold both the hose and the standpipe `in position` within the tubular member and thereby secure the bodyv insert therein.

A better understanding of the invention will be afforded by the following detailed description considered in conjunction, with the accompanying drawing in which Fig. 1 is a longitudinal, medial,y sectional View of a hose coupling forming an embodiment of my invention;

Fig. 2 is a longitudinal, sectional viewcorresponding to Fig. 1, illustrating the manner of crimping the tubular member .to secure the parts thereof;

Fig. 3 is a longitudinal, medial, sectional view of a hose coupling in which a standpipe is welded to a body insert, showing the arrangement of parts prior to assembly of the coupling with a hose and securement thereto;

Fig. 4 is an end View of the apparatus of Fig. 3, showing the arrangement of parts prior to 2 securement of the body insert in the tubular member;

Fig. 5 is a view corresponding to Fig. 3, showing the form of the coupling upon completion;

Fig. 6 is an end view of the apparatus of Fig. 5;

Fig. '7 is a longitudinal, medial, sectional view of a hose coupling in which the coupling end is eXteriorly threaded instead of internally threaded and showing the position of the. hose. within the tubular portion of the coupling;

Fig. 8 is a cross-sectional view of the apparatus of Fig. '7, represented as cut by a plane 8-8 and asseen by looking in the direction of the arrows, indicated in Fig. '7; and

Fig. 9 is a longitudinal, medial, sectional view of a hose coupling in which the body insert is secured by staking one or more portions of the hosesurrounding tubular member.

Like reference characters are utilized throughout the drawing to designate like parts.

Referring to Figs. 1 to 5 of the drawing, where where it is desired to provide a hose coupling which is interiorly threaded at one end for connection with an exteriorly threaded iitting, the coupling preferably comprises a tubular member I I having a reduced-diameter portion 2 at one end interiorly threaded to provide a screw thread I3. The other end I4 of the tubular member II is adapted to surround the outer surface of the end ci a hose, not shown, in Figs. l to 5; but, indicated in Fig. 7.

A body insert I5 is provided having a stand,- pipe IG, projecting therefrom within the hose engaging portion I4V of the `tubular member Il, adapted to engage the interior surface or bore of the hose joined with the coupling.v The line of demarcation between the reduced diameter portion I2 and the remainder ofythe tubular member II is machined or otherwise formed accurately so as to serve as a seat II for a corresponding suriace of the body insert I5 in order 12o-provide a huid-tight joint between the body insert I5 and the tubular member II. Preferably, as illustrated; the seat I'I is conical in shape.

Suitable means are provided for securing the body insert I5 in close contact with the conical seat' l'l. As illustrated in Fig. 2, a conical washer IBis provided which nts around the tubular member il. In order to crimp the tube I I inwardly at the intermediate portion I9 thereof, adjacent the inner edge of the body insert I5, the conical washer I8 is flattened in the position, as shown in Fig. 2. This may be done in any desired manner as by means of two relatively thick sleeves slipped over the tubular member II from either end and driven together so as to bring the surfaces of the washer I8 into parallel planes as illustrated in Fig. 1. This action reduces the diameter of the bore of the washer I8, deforming the walls of the tubular member Il, as shown in Fig. 1, to produce an inward annular rib 2l adjacent the body insert l 5; thus, securing the body insert l5 together with the standpipe I6 within the tubular member Il.

As illustrated in Figs. 1 and 2, the standpipe I5 iis shown as integral with the body insert i5 however, the invention is not limited thereto; and if desired, as illustrated in Figs. 1 and 5, the standpipe I5 may be Welded, brazed or otherwise secured, preferably by some fusion process .to the body insert I5. Furthermore, my invention is not limited to the use i a truncated-conical Washer for deforming the tubular member to secure the body insert l5. For example, if desired, a tubular blank 22, as shown in Fig, 3, may be provided which is formed with a hexagonal rib or center portion 23 servingr as a wrench-engaging'or nut portion. In order to secure the body insert l in position against the seat il. the righthand or hose-engaging portion lll of the blank 22 is contracted or swaged (after a hose has been inserted between the portion I4 and the standpipe i5) so as to produce the formation illustrated in Fig. 5 in which the body insert l5 is secured between the seat il and the swaged shoulder 24.

Figs. 1 to 5 are illustrative of an arrangement in which the tubular member il is interiorly threaded at one end. It is to be understood, however, that my invention is not limited thereto, for

example, if desired as illustrated in Fig. 7, a tubul lar member may be provided with an external thread 25. In the arrangement illustrated in Fig. 7, a blank 26 is provided which is folded inward at one end to increase the thickness of the tube wall as shown at 2l. The inwardly turned portion 2i may extend for the length of the thread 25. Alternatively, if desired, to simplify the op eration, a separate internal bushing 28 may be provided. Preferably the end surface oi the portion 2l is formed as a conical seat 2Q to receive a corresponding flare 8l or" a standpipe 82.

In the arrangement oi Figs. 7 and 8, the hose surrounding portion iii of the tubular member is formed of sufficient length so that the mid portion 33 may be swaged inwardly to the form of J hexagon, as illustrated in Fig. 8, to form a wrench-engaging portion. It is to be understood that the hexagonal portion 33 is made long enough so -as to provide a substantially true hexagon for sufiicient length to receive a standard wrench. In assembling the apparatus illustrated in Fig. 7, the standpipe 32 is inserted into the bore 34 of a hose after the tubular portion I4 has been slipped over the end of a hose 35 and the are 3| is brought into abutment with the conical seat 29. The portion 33 of the tubuiar member is then swaged or compressed into the hexagonal shape thereby compressing the hose 35 so as to secure the standpipe 32 within the hose end to hold the are 3| in the huid-tight contact with the seat 29.

. Although as illustrated in Figs. 1 to 7, I have shown a conical seat I1 or -29 between the body insert l5 and the tubular member, it is to be understood that my invention is not limited thereto. For example, if desired a spherical, parabolic or other curved seat 36 may be employed as illustrated in Fig. 9. Fig. 9 illustrates also the securement of the body insert l 5 within the tubular member Il by inwardly staking one or more portions 31 of the tubular member around the periphery thereof adjacent the inner surface of the body insert I5.

I have herein shown and particularly described certain embodiments of my invention and certain methods of operation embraced therein for the purpose of explaining its principle of operation and showing its application but it will be obvious to those skilled in the art that many modications and variations are possible and I aim, therefore, to cover all such modifications and variations as fall within the scope of my invention which is defined in the appended claims.

What I claim is:

1. A hose coupling comprising in combination a generally tubular open ended sleeve member, threaded at one end with a seat at said end, and having a portion at the other end adapted to engage the exterior of a hose, a body insert disposed within the intermediate portion of said sleeve member and in iiuid sealing contact with the seat of said sleeve member and a normally truncated washer surrounding the intermediate portion of said sleeve member flattened to crimp said sleeve member to secure said body insert therein.

2. A hose coupling comprising a sleeve member having an internally threaded portion at one end, a portion at the other end adapted to engage Y the exterior of a hose, and an intermediate conical abutment portion, a body insert disposed within said sleeve member and having a conical nose the radially outer portion of which seals against said conical abutment portion, the radially inner conical portion of said conical nose being an extension of the outer conical portion and formed to seal with a detachable coupling element of the inverted type, and a standpipe projecting from the other end of said insert and extending within the hose engaging portion of said sleeve member and adapted to be disposed within the bore of a hose, said sleeve member being deformed radially inwardly against said other end of the insert before insertion of a hose therein to grip said body insert and press it against the conical abutment of the body to form a uuid-tight seal with the body.

GEORGE H. HUFFERD.

`IuiFERENcns CITED The' following references le of this patent:

UNITED STATES PATENTS are of record in the 

